Récupérer le nom d'une feuille inputbox

option explicit
' ...
dim Deletedata as string, onglet as worksheet
DeleteData = InputBox("Sélectionnez une feuille Valeur Min", "ValeurMin")
set onglet = Sheets(DeleteData)
onglet.[a1]="ceci est l'onglet "+onglet.name

Option Explicit

Sub Essai()
Dim iVar As Variant, MaFeuille As Worksheet
    iVar = InputBox("Saisir le nom de la feuille Valeur Min", "ValeurMin")
    If StrPtr(iVar) = 0 Then
        MsgBox "Vous avez annulé", vbCritical + vbOKOnly, "Annulation utilisateur"
    ElseIf iVar = vbNullString Then
        MsgBox "Aucune saisie", vbCritical + vbOKOnly, "Pas de saisie utilisateur"
    Else
        Set MaFeuille = getSheetByName(CStr(iVar), ThisWorkbook)
        If Not MaFeuille Is Nothing Then
            MsgBox MaFeuille.Name
        End If
    End If
End Sub
Function getSheetByName(Name As String, Optional Wb As Workbook) As Object
'Pierre Fauconnier
'https://www.developpez.net/forums/blogs/27262-pierre-fauconnier/b8231/vba-excel-verifier-quune-feuille-existe-classeur-trouver-feuille-nom-classeur/
Dim sh As Object, Counter As Long
    If Wb Is Nothing Then Set Wb = ActiveWorkbook
    Counter = 1
    Do While Counter <= Wb.Sheets.Count And getSheetByName Is Nothing
        If StrComp(Wb.Sheets(Counter).Name, Name, vbTextCompare) = 0 Then Set getSheetByName = Wb.Sheets(Counter)
        Counter = Counter + 1
    Loop
End Function